Filling a Void between two 2D objects (Meeple)
Use a vectorial drawing program to trace the shape as path. Save as SVG.

Import to blender as SVG. (File &gt; Import &gt; Scalable Vector Graphics)

Use the Geometry section of the curve to create extrusion.

Done.
Read:
How to model an object with width and depth, based only on an image that shows the outline?